Hausen



(No Model,)

S. WILLERSHAUSEN.

SPRING ATTACHMENT FOR PLATFORM ROCKING GHAIE$. No. 315,870. Patented Apr. 14, 1885.

W %a m E W R V2 0 NW T I y m ..w A a M WITNESSES: @m WM UNITED STATES Pnrisiv'r rrics.

SIEGFRIED YVILLERSHAUSEN, OF NENV YORK, N. Y.

SPRING ATTACHMENT TO PLATFORM ROCKHNG=CHAIRS.

SPECIFICATION forming part of Letters Patent No. 315,870, dated April 1 1-, 1885.

Application filed October 2, 1884.

To aZZ whom it may concern.-

Be it known that I, SIEGFRIED WILLnRs- HAUSEN, a citizen of the Empire of Germany, residing at New York, in the county and State of New York, have invented new and usefulof which are formed cheeks,which overlap the end coil of the spring above and below, and a screw for retaining the end coil of the spring in the groove, so that by the checks the spring is prevented from revolving in the semicircular groove, and an accidental displacement of the same is effectually prevented. \Vhen the spring is secured to the rocker and to the platform of a chair, the checks at the ends of the semicircular groove prevent the chair from tipping over sidewise.

In the accompanying drawings, Figure 1 represents a sectional face view of my attachment, the plane of section being indicated by the line a: 93, Fig. 2. Fig. 2 is a transverse section in the plane 3/ Fig. 1. Fig. 3 is a perspective view of the bracket detached.

Similar letters indicate corresponding parts.

In these drawings, the letter A designates one of the rockers of a rocking-chair, and B is one of the side rails of the plat-form which supports the rockers. 0n the inside of the rocker is secured the bracket 6, and on the inside of the side rail is fastened'a similar bracket, 0, and these brackets are connected by the spring D. Each of the brackets is provided in its face with a semicircular groove, a, at the ends of which are formed cheeks b b, and which is intended to receive the end coil, c,of the spring D. When the end coil is placed into the semicircular groove, the cheeks b b overlap the coil above and below. A screw, (1, serves to secure the end coil of the spring in the groove (1,. This screw also assists in se curing the bracket to the rocker or to the side rail.

By referring to the drawings it will be seen that the cheeks bb overlap the end coil of the spring above and below, and by these means the spring is prevented from turning in the semicircular groove in a vertical plane, or

(No model.)

round an imaginary horizontal axis running parallel to the face of the rocker and drawn through the center of that portion of the semicircular groove which is nearest the face of the rocker. By referring to Fig. 2 it will be seen that if the check I) is taken away the spring can turn in the direction of arrow 1 round an axis formed by that portion of its end coil which is situated beneath the screw (1. If no provision is made to prevent the motion, and the spring is secured to a rocking-chair, the spring is liable to become detached from its brackets whenever the chair is slightly tilted sidewiseduringthcoperationofrocking. This difliculty is effectually overcome by providing the semicircular groove with the overlapping checks 1) I). My attachment also has the great advantage that the spring can be readily dctached from its brackets at either end simply by removing one of the screws d, for as soon as this screw is taken out the end coil of the spring previously retained by said screw can be readily forced out of the semicircular groove without disturbing the other end of the spring. For this reason my attachment can be easily fastened to arocking-chair, simply by first attaching the brackets in the proper position to the rockers and to the side rails of the platform, and then forcing the end coils of the springs into the semicircular grooves of the brackets and securing the same in position by screws [2.

I am aware of the Patents Nos. 1347, 472, dated September 2-7, 1881, and 297,108, dated April 22, 1884:. The former shows a bracket which has a semicircular ledge for supporting the end coil of the spring and a screw for retaining the end coil on theledge. This device lacks the cheeks Z) b,which are essential to produce a secure connection between the bracket and the spring.

In Patent No. 297,108 a bracket is described which has a spiral ledge that passes between the first and second coils of the spring.

In order to secure the spring in position it must be turned round, and if the spring is secured to a rocking-chair neither end can be detached from its bracket independent of the other.

What I claim as new, and desire to secure by Letters Patent, is-

1. he combination, substantially as herein- ICO before described, with the rockers of a chair ends of the semicircular grooves, and the screws for retaining the end coils of the springs in the grooves.

In testimony whereof I have hereunto set my I 5 hand and seal in the presence of two subscribing witnesses.

SIEGFRIED WILLERSHAUSEN. [L s.]

Witnesses:

CHAS. S. HAYES, E. F. KASTENHUBER. 

